Originally Posted by kaiv
There's a market if you want to produce something simple and effective.
The Cantrel kit is nice but when I look at it I don't see $500+
Yup but when you look at what's available, they are the best bang for the buck. For a car that's supposedly tracked a lot (and I do see a lot of E9x M3's at track days), I'm amazed at what little options there are for parts that are very beneficial at the track (larger oil cooler anyone??).